We're going to solve 2199 multiplied by 4200
2199 × 4200 = 4200 × (2199)
+ 4200 × 9 giving us 37800
+ 4200 × 90 yielding 378000
+ 4200 × 100 that is equal 420000
+ 4200 × 2000 which equals 8400000

= 9235800
